% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '103.72.212.0 - 103.72.213.255'

% Abuse contact for '103.72.212.0 - 103.72.213.255' is 'info@rings3.com.bd'

inetnum:        103.72.212.0 - 103.72.213.255
netname:        RINGS3-BD
descr:          Rings-3
country:        BD
org:            ORG-RA59-AP
admin-c:        RA724-AP
tech-c:         RA724-AP
abuse-c:        AR1348-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-RINGS3-BD
mnt-routes:     MAINT-RINGS3-BD
mnt-irt:        IRT-RINGS3-BD
last-modified:  2023-01-23T00:06:15Z
source:         APNIC

irt:            IRT-RINGS3-BD
address:        25/1, Rayer Bazar, Shop-03, Khan Market, Sadek Khan Road, Mohammadpur Dhaka 1207
e-mail:         info@rings3.com.bd
abuse-mailbox:  info@rings3.com.bd
admin-c:        RA724-AP
tech-c:         RA724-AP
auth:           # Filtered
remarks:        info@rings3.com.bd is invalid
mnt-by:         MAINT-RINGS3-BD
last-modified:  2025-11-18T00:36:41Z
source:         APNIC

organisation:   ORG-RA59-AP
org-name:       Rings-3
org-type:       LIR
country:        BD
address:        25/1, Rayer Bazar, Shop-03, Khan Market, Sadek Khan Road
phone:          +8801712630137
e-mail:         info@rings3.com.bd
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:19:09Z
source:         APNIC

role:           ABUSE RINGS3BD
country:        ZZ
address:        25/1, Rayer Bazar, Shop-03, Khan Market, Sadek Khan Road, Mohammadpur Dhaka 1207
phone:          +000000000
e-mail:         info@rings3.com.bd
admin-c:        RA724-AP
tech-c:         RA724-AP
nic-hdl:        AR1348-AP
remarks:        Generated from irt object IRT-RINGS3-BD
remarks:        info@rings3.com.bd is invalid
abuse-mailbox:  info@rings3.com.bd
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-04T21:55:54Z
source:         APNIC

role:           Rings - 3 administrator
address:        25/1, Rayer Bazar, Shop-03, Khan Market, Sadek Khan Road, Mohammadpur Dhaka 1207
country:        BD
phone:          +8801712630137
e-mail:         info@rings3.com.bd
admin-c:        RA724-AP
tech-c:         RA724-AP
nic-hdl:        RA724-AP
mnt-by:         MAINT-RINGS3-BD
last-modified:  2023-01-22T07:31:17Z
source:         APNIC

% Information related to '103.72.212.0/24AS134732'

route:          103.72.212.0/24
descr:          Dot Internet
origin:         AS134732
mnt-by:         MAINT-RINGS3-BD
last-modified:  2023-01-28T16:22:55Z
country:        BD
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)